FBI starts dig seeking California student Kristin Smart, missing 20 years

CBS NEWS - An FBI team has begun excavating a site on the edge of California Polytechnic State University, San Luis Obispo, in hope of finding the remains of a student who vanished more than 20 years ago.Kristin Smart, 19, of Stockton, was last seen in the early morning of May 25, 1996, while returning to her dorm after a party near the campus in the Central Coast region midway between San Francisco and Los Angeles.At the time, another student told authorities he left Smart near her dormitory af